Asperger synrome (pronounced /ˈasˌpərgɘr ˌsɪndrəʊm/ in the U.S., /ˈasˌpəːgɘ/ in Britain; also called Asperger's syndrome, Asperger's disorder, Asperger's or AS) is one of several autism spectrum disorders (ASD) characterized by difficulties in social interaction and by restricted, stereotyped interests and activities. AS is distinguished from the other ASDs in having no general delay in language or cognitive development. Although not mentioned in standard diagnostic criteria, motor clumsiness and atypical use of language are frequently reported.